Question

1. What is the main activity of the colon?

		Reabsorbing water from the guts into the circulatory system
		Absorbing water from the circulatory system to excrete from the body
		Absorbing cellulose and glucose into the circulatory system
		Absorbing amino acids and cellulose into the circulatory system
		Killing off bacteria on the digested food

2. Which of the following is important in inflammation?

		Contraction of actin, myosin, and thrombosthenin
		Increased permeability of capillaries
		Activation of platelets
		Antibody activation
		Superoxide and hydrogen peroxide

3. When oxygen-rich blood passes through a capillary bed in poorly-oxygenated tissue, what happens?

		Hemoglobin delivers carbon dioxide to the tissue and picks up oxygen waste
		Hemoglobin changes shape and much of the oxygen unbinds from the hemoglobin
		Hemoglobin leaves the capillary and enters the tissue to deliver oxygen
		Hemoglobin enters the capillary to carry carbon dioxide away from the tissue
		Hemoglobin changes shape and most of the carbon dioxide unbinds from the hemoglobin

4. If a person with type-O blood (the host) receives blood from a type-A donor, what are the consequences?

		There is no clotting because there are no antigens on the donor’s type-A blood
		Both A and B are true
		The type-A donor blood clots because of the anti-B antibodies in the host’s body
		The type-A donor blood clots because of the anti-A antibodies in the host’s body
		There is no clotting because there are no antibodies in the host’s type-O blood

5. Which of the following statements best explains how the amount of water inside alveoli remains small?

		The lymphatic system drains fluids from the alveoli
		There are large amounts of proteins in the water inside the alveoli, which dilutes the water
		There are large amounts of proteins in the interstitium, causing water to leave alveoli via osmosis
		The fluid in the alveoli is passed into the esophagus
		The question is wrong; the alveoli have large amounts of water in them

6. Which of the following statements about hydrochloric acid in the stomach is FALSE?

		Begins the process of breaking down fats
		Kills many pathogens that enter the stomach
		It is responsible for activating pepsinogen into pepsin
		Its production results in an increase in bicarbonate in the blood
		Denatures proteins in the stomach

7. A protein designed to attach to one kind of invading structure (protein, carbohydrate, or other structure or chemical that identifies the invader) is:

		Lymphocyte
		Rh factor
		Antibody
		Antigen
		Lysosome

8. Which of the following statements about T-lymphocytes is true?

		They are responsible for manufacturing antibodies
		Some kinds of T-lymphocytes bind to invaders, puncture them, and poison them
		They are manufactured in the bone marrow
		Each T-lymphocyte can react to dozens of different antigens
		They are related to humoral immunity, and not cell-mediated immunity

9. When an action potential is inhibited, which of the following statements describes the voltage change?

		Neurotransmitters are not produced in adequate amounts to carry on an action potential
		Sodium ions are drawn into the axon and not released
		Too much neurotransmitter is produced, causing the action potential to damage the axon
		A greater voltage change is required because the resting voltage is unusually negative
		A smaller voltage change is required because the resting voltage is close to zero

10. Which of the following type of white blood cells (leukocytes) moves via amoeboid locomotion?

		Erythrocytes
		Lymphocyte
		Basophils
		Platelets
		Macrophages

11. When a person sees a car driving on the road, and simultaneously hears the motor, the two sensory inputs can be combined to form a more complete understanding of the situation. This is an example of:

		Afferent and efferent interaction
		Chemosensitivity
		Partial pressure
		Integrative function
		Facilitation

12. During exercise, the blood flow to the lungs increases by:

		Decreased pressure in the pulmonary arteries
		Greater pressure from the left ventricle of the heart
		Greater number of open capillaries
		More rapid contractions of the diaphragm
		Slow, strong contraction of the diaphragm

Answer 1